I have my ps2 keyboard and mouse hooked up to my mini using a ps2 to usb adaptor.

sometimes when I bootup I have to unplug and replug it in to get the mini to see them. Other times when I'm in the middle of typing it will just get stuck on one letter and wont work again until I unplug the usb cable and plug it back in.

I would bet the problem is with the adapter as well. I use USB<>PS/2 y-cable adapters on all three of my minis (two w/o KVM, one w/ KVM) and don't have any issues. I use both Belkin and Logitech adapters._________________ -=iMav=- http://geekhack.org